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CVE-2026-40418
Published: May 12, 2026
Modified: Jun 2, 2026
PUBLISHED
CVSS v3.1
7.8
HIGH
Description
Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.
| Vendor | Product | Versions |
|---|---|---|
Microsoft | Microsoft 365 Apps for Enterprise | affected 16.0.1 - < https://aka.ms/OfficeSecurityReleases |
Microsoft | Microsoft Office 2019 | affected 19.0.0 - < https://aka.ms/OfficeSecurityReleases |
Microsoft | Microsoft Office LTSC 2021 | affected 16.0.1 - < https://aka.ms/OfficeSecurityReleases |
Microsoft | Microsoft Office LTSC 2024 | affected 16.0.0 - < https://aka.ms/OfficeSecurityReleases |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
References
Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
vendor-advisory
patch
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